/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlet;

import entity.Utente;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

/**
 *
 * @author sflesca
 */
public class ListaUtenti extends HttpServlet {

    @Resource(name = "NegozioDS")
    private DataSource negozioDS;

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        Connection con = null;
        PreparedStatement stm = null;
        ResultSet rst = null;
        Utente u = null;
        List<Utente> lu = new LinkedList<Utente>();
        try {
            con = negozioDS.getConnection();
            stm = con.prepareStatement("SELECT * FROM utenti");
            rst = stm.executeQuery();
            while (rst.next()) {
                u = new Utente(rst.getInt(1), rst.getString(2), rst.getString(3), rst.getString(4), rst.getString(5));
                lu.add(u);
            }
            request.setAttribute("lu", lu);
//            response.sendRedirect("listautenti.jsp");

        } catch (SQLException ex) {
            Logger.getLogger(ListaUtenti.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            gotoPage("/listautenti.jsp", request, response);
            try {
                if (rst != null) {
                    rst.close();
                }
                if (stm != null) {
                    stm.close();
                }
                if (con != null) {
                    con.close();
                }
            } catch (SQLException ex) {
                Logger.getLogger(listaProdotti.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

    private void gotoPage(String address,
            HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, IOException {
        RequestDispatcher dispatcher =
                getServletContext().getRequestDispatcher(address);
        dispatcher.forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
